• Physical Therapy Rehabilitation Science
• /
• v.8 no.2
• /
• pp.93-98
• /
• 2019

Objective: The purpose of this study was to investigate the effect of robot arm reach training on upper extremity functional movement in chronic stroke survivors. Design: One group pretest-posttest design. Methods: Thirteen chronic stroke survivors participated in this study. Robot arm reach training was performed with a Whole Arm Manipulator (WAM) and a 120-inch projective display to provide visual and auditory feedback. During the robotic arm reach training, WAM provided gravity compensation and assist-as-needed (AAN) force according to the robot control mode. When a participant could not move the arm toward the target for more than 2 seconds, WAM provided AAN force to reach the desired targets. All patients participated in the training for 40 minutes per day, 3 times a week, for 4 weeks. Main outcome measures were the Fugl-Meyer Assessment (FMA), Action Research Arm Test (ARAT) and Box and Block Test (BBT) to assess upper extremity functional movement. Results: After 4 weeks, significant improvement was observed in upper extremity functional movement (FMA: 42.15 to 46.23, BBT: 12.23 to 14.00, p<0.05). In the subscore analysis of the FMA upper extremity motor function domains, significant improvement was observed in upper extremity and coordination/speed units (p<0.05). However, there were no significant differences in the ARAT. Conclusions: This study showed the positive effects of robot arm reach training on upper extremity functional movement in chronic stroke survivors. In particular, we confirmed that robot arm reach training could have a positive influence by leading to improvement of motor recovery of the proximal upper extremity.

• Korea Trade Review
• /
• v.44 no.5
• /
• pp.45-63
• /
• 2019

The purpose of this study was to identify methods to effectively train experts in trade. In order to achieve the purpose of this study, the relevant literature was analyzed. Three experts from each of academia, the private sector and the government sector were interviewed. The study results found that the problems of cultivating trade experts were quantitative and qualitative mismatches, the disparity with the field, and the lack of government support for training trade experts, etc. Methods for fostering trade experts were suggested to resolve these mismatches, to secure a budget for training trade experts, to establish a body or council for coordination, to develop a trade expert roadmap, to introduce a program for certificated trade expert, and to improve the quality of education for trade experts.

• Korean Journal of Applied Biomechanics
• /
• v.18 no.2
• /
• pp.95-104
• /
• 2008

The purpose of this study was to investigate kinematic coordination and control of lower segments in skill process. For the investigation, we examined the difference of resultant linear velocity of segments and angle vs angle graph. Novice subjects were 9 male middle school students who has never been experienced a taekwondo and expert subjects were 7 university taekwondo players. We analyzed kinematic variables of Dollyochagi motion through videographical analysis and the conclusion were as follows. 1. Examining the graph of novice subjects' maximal resultant linear velocity of the thigh, shank, and foot segment, as it gets closer to the end of the training, the maximal resultant linear velocity in each segment increased. Statistical analysis showed the following results; thigh segment caused the increase of speed, using the trunk segment's momentum in the latter term of learning, while the shank segment utilized the momentum of the adjacent proximal segment at the beginning of learning, and the foot segment in the middle of learning. 2. Until the point where the knee joint angle is minimum, as the novice group learn the skill, the flexion of knee and hip joints has changed into the form of coordination pattern in phase. On the other hand, the expert group showed continual coordination pattern in phase that the movement sequences were smooth. From the knee joint maximal flexion to impact timing, all novice and expert groups showed coordination pattern out of phase. 3. From the knee joint maximal flexion to impact timing, the ankle joint was fixed and the knee joint was extended to all the novice stages and expert subjects.

• Journal of the Korean Applied Science and Technology
• /
• v.40 no.6
• /
• pp.1340-1349
• /
• 2023

Despite its profound impact on athletic performance, the significance of heart rate recovery (HRR) has been insufficiently addressed in the filed of sports science, particularly in the context of weightlifting characterized by brief and intense exertions involving heavy weights. Serving as a valuable indicator of autonomic nervous system and cardiovascular function, HRR assumes a pivotal role in weightlifting. This comprehensive review aims to delineate the specific demands for HRR in weightlifting, shedding light on the often overlooked cardiovascular considerations within training regimes focused on strength and power. The investigation scrutinizes the repercussions of HRR on weightlifting performance, seeking to elucidate how inadequate recovery intervals may result in physiological and psychological consequences. These consequences encompass a distorted perception of effort, disruption of coordination, compromised posture due to irregular breathing, and an overall decline in lifting capacity. The review systematically presents compelling evidence pertaining to heart rate response and recovery patterns during weightlifting, underscoring the critical importance of well-structured rest periods. Furthermore, the review delves into a comprehensive discussion of factors influencing HRR in weightlifting, encompassing variables such as sex, age, cardiovascular function, hydration, nutrition, and psychological aspects. Finally, a key emphasis is placed on the integration of effective HRR techniques into the training regimens of weightlifters, thereby ensuring sustained and optimized performance outcomes.

• Journal of Environmental Health Sciences
• /
• v.46 no.2
• /
• pp.159-169
• /
• 2020

Objectives: The purpose of this study was to investigate changes among the nine kinds of reduction chemical substances in Korea over the period of 2008-2017. We will define basic data for improving the management methods for reducing chemical substances. Methods: A survey of hazardous pollutant emissions for 2008-2017 was conducted through the pollutant Release and Transfer Register homepage. Nine kinds of designated reduction chemical substances (Benzene, Vinyl chloride, Trichloro ethylene, 1,3-butadiene, Dichloro methane, Tetrachloro ethylene, N,N-dimethylformamide, Acrylo nitrile, and Chloroform) provided the study subjects. The emission of hazardous chemicals and health effects used the National Health Statistics and Integrated Chemicals Information System (ICIS) as a reference. Results: Hazardous pollutant emissions increased by 1.2 times over the past decade, and nine types of reduction chemical substances increased by 1.6 times. By region, the emissions of reduction chemical substances over the last 10 years were in the order of Chungbuk, Gyeonggi, and Gyeongbuk. Emissions of Dichloro methane was the highest in Chungbuk and Gyeongbuk. N,N-dimethylformamide was the highest in Gyeonggi. Carcinogen pollutant emissions showed a tendency to increase continuously. In addition, group 1 carcinogen emissions showed a tendency to decrease. Conclusion: In the last decade, the amount of hazardous chemical emissions has been continuously increasing. Hazardous chemical emissions require facility improvement for continuous emissions reduction. More research on reduction of emissions is needed.

• Culinary science and hospitality research
• /
• v.10 no.3
• /
• pp.51-64
• /
• 2004

This study was designed to examine the educational conditions of a foodstylist and student satisfaction with the training. It looked at the educational conditions of the food-stylist department, one of relatively newly-emerging departments, and examined student satisfaction by each factor in order to have specific problem in the educational conditions. The purpose of this study was to maintain higher student satisfaction and to have competitive advantage over the other related departments. For the general information of respondents, most respondents said the monthly average income to be approximately 1.5 times higher than that of common workers in the country, showing that the food-stylist department is preferred by the class with economic ability. For admission motives, respondents used the information via mass communication when they choose it For general educational conditions, students have most satisfaction with the originality of department, at the score of 3.79, following by laboratory and vision in the order. The least satisfaction was in career guidance, reflecting that they have vague ideas where to work. For the theoretical course of study, it was found that ‘Introduction to Table Coordination’ had the highest satisfaction, 3.82, following by ‘Coloring’ and ‘Understanding on Oriental and Occidental Tablewares’ in the order. ‘Food and Beverage Service’ and ‘Public Health’ were found to have the least satisfaction, showing that those subjects do not cause any interest in terms of their property. For the satisfaction of practical training course, it was found ‘Cocktail Practices’, ‘Bakery and Confectionary Practices’, and ‘Understanding of Wines’ in the order, showing that practical subjects with high visuality have higher satisfaction. Further studies are necessary to examine the satisfaction with subjects from various classes, together with many course of study, and to develop statistical data that help us understand the needs of students more correctly for application.

• Journal of Environmental Health Sciences
• /
• v.45 no.5
• /
• pp.465-473
• /
• 2019

Objectives: A variety of industries handling hazardous chemicals emit odorous substances. Based on the emission characteristics of major odor substances from the results of hazardous chemical substance emissions, we will define basic data for improving the management methods of odorous substances. Methods: A survey of hazardous pollutant emissions for 2010-2016 was conducted through the Pollutant Release and Transfer Register homepage. Eight kinds of designated odor substances (ammonia, hydrogen sulfide, dimethyl disulfide, acetaldehyde, styrene, toluene, xylene, methyl ethyl ketone) provided the study subjects. The status of chemical accidents for the target substances was analyzed using the Chemistry Safety Clearing-house system. Results: From 2010 to 2016, it was found that more than 30% of businesses that emitted odorous substances accounted for more than 50% of the total emissions of the eight substances. Emissions of xylene, toluene, methyl ethyl ketone, and ammonia were found, in that order, and they made up more than 90% of the total emitted. By region, about 70% of odorous substances were emitted in the top-four regions: Gyeongsangnam-do Province, Ulsan, Gyeonggi-do Province, and Jeollanam-do Province. Conclusion: Recently, the amount of chemical emissions has been continuously increasing, including those that can cause odor. Odorous substances can be a serious risk to the lives of local residents. Systematic research is needed for the health protection of residents.

• Proceedings of the KSR Conference
• /
• 2011.10a
• /
• pp.1511-1516
• /
• 2011

The maintenance of the turnout is composed of signal field and track field on business, the electrical and mechanical field on system. adjustment and maintenance carry forward through coordination with these fields. In the case of turnout equipment used in a first phase of Seoul-Busan high-speed train, it is treated by classifying as mechanical adjustments and electrical adjustments. Mechanical adjustment is conducted with focus on fine adjustment to meet maintenance standards limits(1mm or less) about interval of basic rail and tongue rail about each part of track transition equipment. This refers to mechanical adjustments performed mainly with physical changes and movement characteristics between basic rail and tongue rail by considering the overall environment surrounding track side of section installed track transition equipment. However, these series of maintenance are conducted in state that high-speed train is not in the process from 1 am to 4 am at night, but common workers for maintenance are not familiar with the operation and checking about various situation, and the workers are even insufficient. Maintenance training using mixed reality is conducted in the place of business, we tried to overcome several problems of safety and time reduction through this training.

• International Journal of Advanced Culture Technology
• /
• v.8 no.2
• /
• pp.101-108
• /
• 2020

One difficulty in language learning is the training of reading ability. The improvement on this ability directly affects the process and effect of language learning. At the same time, there are numerous difficulties in actual learning and teaching. Depending on current research, there is two ideas that can utilize to enhance the reading efficiency of learners. One is to amend objective factors; the other is to change subjective factors. Compared with the two ideas, idiosyncratic factors are more manipulable and controllable, so it is more valuable to conduct researches on this. But among the many subjective factors, the degree of their effectiveness is not the same, so this article attempts to compare and analyze the driving effects of two important subjective factors (peer-driven and task-driven) on reading performance. The results show that both factors can have a positive impact on reading comprehension, but different in driving effects. The task-driven has obvious short-term effectiveness; while peer-driven needs to establish its long-term effect on the basis of early coordination and cooperation among team members. Therefore, in order to maximize the achievement of learning, it is necessary to combine strengths and avoid weaknesses according to the characteristics of two factors, so as to help learners improve reading ability most efficiently.

• The Journal of Korean Academy of Sensory Integration
• /
• v.4 no.1
• /
• pp.47-55
• /
• 2006

Objective : The purpose of this study was to evaluate the correlation between visual perception ability and activities of daily living(ADL) in the children with spastic diplegia who were treated at developmental disabilities children salutary institute. Method : The subject were consisted of 8 children with spastic diplegia(mean age, 10). The visual perception ability was measured by the Developmental Test of Visual Perception(DTVP) and by the Functional Independence Measure for Children(WeeFIM) to evaluate activities of daily living. Collected data analysis were completed by using correlation analysis. Results : Visual perception ability of children with spastic diplegia is the highest in Position in Space(PS) score, and is the lowest in Visual-Motor coordination(VM) score. Average visual perception performance of children with spastic diplegia is the highest in SR(Spatial relationship) score, and is the lowest in VM score. In activities of daily living, eating component were significantly correlated with Visual-Motor coordination. Conclusions : Therefore, accurate evaluation of visual perception ability and visual perception training for children with spastic diplegia will be important to improve patient's activities of daily living skill.